Format

Send to

Choose Destination
Ophthalmic Physiol Opt. 2016 Jan;36(1):5-12. doi: 10.1111/opo.12244. Epub 2015 Sep 9.

Age and the amplitude of accommodation measured using dynamic retinoscopy.

Author information

1
Universidad de la Salle, Bogotá, D. C., Colombia.
2
Fundación Universitaria Del Área Andina, Pereira, Risaralda, Colombia.
3
SUNY College of Optometry, New York, New York, USA.

Erratum in

Abstract

PURPOSE:

Dynamic retinoscopy (DR) is a procedure for assessing the accommodative response using a standard clinical instrument. The present study compared measurements of the amplitude of accommodation (AA) obtained using this technique with two subjective methods (modified push-down and minus lens). Additionally, the expected ranges for AA when measured by DR were determined.

METHOD:

AA was measured in 1298 subjects between 5 and 60 years of age using the three techniques described above. Subjects were grouped into 5-year bins, and a descriptive univariate analysis of the data performed. Goodness-of fit plots were constructed to examine the overall model fit. Centile curves were calculated from the final model.

RESULTS:

Mean values of AA obtained using DR were significantly lower than for the two subjective techniques. For the DR findings, no significant change was observed between 5 and 19 years of age (mean AA = 8.3 D) and between 45 and 60 years of age (mean AA = 0.6 D). AA values as a function of age were best fit by the polynomial regression equation: logAA = 1.93 + 0.49(age) - 0.19(age)(2) .

CONCLUSION:

Measurements of AA determined using DR are significantly lower than the normative subjective findings published previously. This difference is at least partly due to the depth-of-field of the eye. These norms markedly overestimate accommodative responsivity. DR provides a simple technique for quantifying accommodation in the clinical setting.

KEYWORDS:

age; amplitude of accommodation; dynamic retinoscopy; presbyopia; subjective amplitude of accommodation

PMID:
26353999
DOI:
10.1111/opo.12244
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wiley
Loading ...
Support Center